Valve for pneumatic tires.



E. TESSNER.

VALVE FOR PNEUMATIC TIRES.

APPLIUATION FILED MAY 13, 1918.

Patented Oct. 27; 1914.

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o ll l ti l ill tiltLVlE non PNEUMATIC WIRES.

To all whom may concern Be it lrnown that l. EDWARD 'lnesnnn, a citizen of the United States, residing at i dilwaulree, in the county of Milwaukee and State or li isconsin, have invented certain new and useful improvements in alves tor l 'neumatic Tires. at which the following a specification.

This llltt'ntltl'tllfl relates to intlation valves, and more particularly to a valve adapted for use in connection with pneumatic tires "for motor vehicles an d the lilte.

The primary object of the invention is to provide a pneumatic "valve wherein ellioient means provided for normally check ing or preventing the escape of the compressed air from within the tire, yet permitting the tire to be additionally inflated should occasion demand.

A further ohject of the invention contemplates provision of automatic means including a pair of spring pressed ballvalves adapted to be arranged within the casing oi the device for normally closing the mouth at the said casing against air escaping from within the tire, the halls heing mounted in such a novel and peculiar manner as to readily permit the in-fCIrcod iii) air to pass through t e valve casing and into the tire in connection with which or to which the valve is attached.

A still further ohjeot oi the invention resides in the provision oi: a specially constructed vertically adjustable valve stem arranged within the interior of the valve casing to provide a valve seat for one of the ball-valves, and to form a support to hold the other of the ball-valves in enga ement with a second valve seat provi ed therefor, thus doubly insuring the retention oi? the air within the tire under normal conditions.

The above and additional objects are accomplished hy such means as are illustrated in their preferred embodiment in the accompanying drawings, described in the tollowinp: specification and then more particularly pointed out in the appended clainm torminp a part of this application.

in describing the invention in detail, reference wi l he had to the accompanying drawings, wherein like characters denote hire or corresponding parts throughout the several views in which: i

Figure l is an enlarged vertical sectional view at pneumatic valve constructed in {Specification ct Letters .tatciit.

application 111cc]. may 13, 191B.

ftatentetl ill cit. iifl, lttlild.

Serial-Ito. 767,363.

accordance with my invention; Fig. 2 is a detail vertical sectional view of the valve stem; Fig. 3 is a top plan view of the said stem; and Fig. 4 is a sectional view of the adjustable plate forming a part of the in-' vention.

Referring now to the drawings, wherein is illustrated the preferred :l'orm oi my invention, the numeral 1 designates the tire to which the valve is attached through the medium of suitable retaining blocks 2 of the ordinary type, the valve comprising an exteriorly screw threaded casing 3 having a vertically extending bore or opening 4 formed therein within which the valve mechanism is arranged. The lower extremity oi? the bore or onion at is interiorly threaded as at 5 for a justahly supporting a specially constructed valve stem (i, the latter being exteriorly threaded as at 7 to permit vertical adjustment of the said stem within the said casing. A head or enlargement 8 is formed integrally with and at the lower extremity of the valve stem (5, the said head heinc, provided with the exterior-1y threaded portion 7 above mentioned, from which point the enlargement converges or tapers toward its lower end for the purpose of spacing the outer wall thereof away from the inner wall of the casing 3 within which it is arranged.

Air ports or passage ways 9 are formed within the enlargement 8 of the stem and extend from shoulders 10 formed by the said enlargement to a concaved valve seat 11 formed concentrically within the lower eatremity or end of the stem, the ports or passage ways opening communication between the upper portion of the opening 4 and the lower interiorly threaded portion within which a suitable plate member 12 p is adjustably mounted by means of a threaded, periphery 13. A centrally disposed upwardly pro ection; stud orenlargement it is formed integrally with the plate member 12 over which an expansion sprin 15 is arranged, the said spring 15 normal y forcing a hall-valve 16 into the valve seat It tor closinp; the passage ways 9 oi the valves 10 and preventing the air contained within the lower .ortion ot the valve casing 3,

from entering the upper portion thereoi.

A second and larger hall-valve 17 is normally tor-cod a amet or into engagement w th a rubber ring 18 through the medium at an expansion spring 19 arranged over an provision of thevertically extending rod 2t;

the stein t or the valve, the upper extremity of the said spring engaging the hall for normally supporting the same against the said ring 18, the latter being supported against upward vertical movement by means at shoulders l9 formed Within the casing 53 near its upper ertremity. The said stem 6 is provided with a centrally disposed vertically extending opening 20 Within which a rod 211 is slidably mounted, one end oi the rod engaging the bell-valve 16 and its opposite or upper end engaging the hall 17, this arrangement simultaneously moving one hell according to the movement of the other @penings 29, are formed Within the plate member 12 lor opening communication betvreen the lovverportion oi the casing 3 in the interior of the tire l in connection with which the valve is employed thereby producing a continuous air passage hetvveen mouth. 23 of the valve casing, and the interior ot the tire for in-iorced air, the two hall-valves are supported or retained Within their respective valve seats by of springs 15 it), loath which are compressed during the inflation of the A cap 52 be arranged over the mo 1 of he casing it?) for normally closing the valve preventii dust and other forsign entering the interior described fully structure of the pneumatic valve, the operation or morei, ment of parts during actual application nor] be fully forth, iii-forced air it comes into engagement with the larger ball-valve it forces the said ball downwardly, compressing the spring 19 and moving the vertically extending rod 21, which turn iforces the smaller ball-valve it out of engagement with the valve it, thus creating continuous air passage from the mouth to the lovver portion of the valve opening or here i Where the air is free to pass on into the interior of the tire to the openings 22 of the plate member. the pressure off the inwardly torced air is with drawn from the ball-valve 117, the springs 15 and 19 respectively return the said halls it and It? into engagement with the valve seats provided therefor, thus etfectually closing the air passage way and checking or preventing the escape of the compressed from the interior of the tire.

lt will be seen fromithe above, talren in 7 connection with the accompanying drawings that" the two ball-valves are moved simultaneously, this being accomplished by the till lid

that the said valves are both yieldably supportedby the expansion springs 15 and 19 thus permitting the balls to move down vvardly for opening the passage way during a 5 the initiation of the tire" and that vertical the form of my invention, illustrated in the drawings and referred to in the above de scription, as the preferred embodiment, is the most efiticient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement Oil parts may be resorted to, When required, Without sacrr iicing any of the advantages of my invent tion, as defined in the appended claims,

Having thus fully described my invention, What it claim as new and desire to secure by Letters Patent is:

l. A valve including a valve casing hav ing valve seat formed therein, a valve stem having a valve seat formed therein, and pair of valve members disposed for yieldahle engagement with the said seats, the said members adapted to he actuated simultaneously, as and for the purpose se forth.

2, A pneumatic valve including a valve casing having a valve seat formed therein, a vertically adjustable valve stem, a valve seat formed within the said stem, a yield ably supported hall-valve disposed for engagement with the said first mentioned valve seat, a yieldably supported hall-valve disposed tor engagement with the said. second mentioned valve seat, and means engaging the said two hall-valves tor simultaneously actuating the same, as and tor the purpose set forth,

3. A valve including an outer casing, an adjustable valve stem arranged therein, a pair oi spring "pressed hall valves disposed vvithin the said. casing, one of said valves engaging valve seat formed within the said stem, the otherengaging a valve seat formed Within the said casing.

t il, valve including an outer caning a vertically extending here, the lower extremity of which is interiorly threaded, a vertically adjustalole valve stem arranged Within the said casing, the said stem being threaded Within the said hora, a head formed integrally with the said stem, the said head having, air passage Ways termed therein, and a pair of spring pressed ball-valves disposed Within the said cashig, one of the said valves engaging a Ill "ill

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lllll ltd valve seat formed Within the said stein tor formed integrally with the said stem, the said head being exteriorly threaded to en gage the interior threaded portion of the said casin and having air passage ways extending t erethrough, an adjustable perforated plate member arranged adjacent the said head, and a pair of ball-valves arranged within the said casing, one of the said valves engaging a valve seat formed within the said head for closing the air passages and the other valve engaging a valve seat formed within the said casing.

6. An inflation valve including an outer casing, a verticall adjustable valve stem arranged within t e said casing, a vertically adjustable perforated plate member arranged within the said casing beneath the said valve stem, a spring ressed ballvalvesupported by the said p ate member and adapted to engage the valve seat formed within the said stem, a sprin pressed ball-valve supported by the sai stem adapted to engage a valve seat formed within the said casing, and a rod extending vertically through the said stem for operatin the two valves simultaneously.

An inflation valve including an outer casing, a vertically adjustable valve stem arranged within the said casing, a head formed integrally with the said stem at the lower end thereof, the said head havin air passage ways extendin therethroug h, a vertically adjustable per orated plate member arranged within the said casin beneath the said head, a s ring pressed all-valve carried by the sai 'plate member adapted to normally engage a valve seat formed within the said head for closing the said passage ways, a second spring pressed ball-- valve supported by the said stem, the said second mentioned ball-valve adapted to normally engage a valve seat formed within the said casing, and means including a vertically extending a rod slidably mounted within and extending through the said stem for simultaneously moving the. said ballv'alve, as and for the purpose set forth.

8. An inflation valve including an outer casing, the said casing having an interiorly threaded vertically extending bore, a valve stem arranged within the said casing, a head formed integrally with and upon the lower extremity of the said stem, the said head being exteriorly threaded for adjusting the said stem throughout the length of the said interiorly threaded bore, a vertically adjustable perforated plate member threaded within the said bore beneath the said head, an expansion spring carried by the said plate member, a ba l-valve supported by the said spring for normally forc- 1n the former into enga ement with the va ve seat formed within t e said head for normally closing air assage wa s arranged within the said head, a second expansion spring sup orted by the said valve stem, a second bal -valve supported by the said spring the said spring normally forcing the said valve into engagement with a valve seat formed within the said casing, and means including a rod extending vertically through the said stem and engaging the said ball-valves for simultaneously moving the same for opening and closing air communication from the said casing.

In testimon whereof I afix my signature in presence 0 two witnesses.

EDWARD TESSNER.

Witn:

Waurnn C. Srmnmrrz, CHRIST. S'rnwmn'rz. 

